Using a humidifier can reduce your heating costs because moist air retains heat better than dry air. There are other benefits too: humidifiers reduce static electricity (and annoying wintertime shocks), dry skin, and make it easier to breathe. Cost: $30 and up.
Four Ways to Cut Your Fall Heating Costs

Heating is expensive. That's why every year it makes sense to postpone turning the furnace on as long as possible. But just because we're well into fall doesn't mean we have to throw any more money away on heating than we have to.
Run a humidifier
Put ceiling fans to work
Use fans to move the heated air around your house. If you have ceiling fans, set them on the lowest speed and have them push the warm air at the ceiling down to your level (warm air rises). This could allow you to lower the temperature of your thermostat by making the room feel a lot warmer.
Seal the leaks in your house
If you seal most of the common leaks, you can save up to 10 percent on your heating bill this winter. To detect leaks, wait until it is cold outside; you will probably need at least a 30-degree difference in the indoor/outdoor temperatures to notice the difference.
Common areas to find leaks include around doors, windows, near the attic, where wires and cables enter your house, and around electrical outlets. Seal gaps around any pipes, wires, vents or other openings with caulk or weather stripping.
Cook casseroles
Making meals at home saves money (especially if you make enough for leftovers), and using your stove helps keep your home nice and toasty without running the furnace.
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